Have you been able to get it working? I've added references to this type of adapter in the Guide (it'll show up next minor update) but there doesn't seem to be many similar models on eBay, other than AAUI adapters *yawn*.

EDIT: I'd love to have one of those things around. Probably much, much better than a regular AFP bridge. Also: viewtopic.php?f=16&t=1428